00601nam a22001817a 4500003000800000005001700008008004100025040002100066082001300087100001900100245009000119260004000209300003300249504005100282650002100333650003100354650003400385BD-DhUL20150112154153.0150112s1947    n  a|||| |||| 001 0 eng d  cBD-DhULdBD-DhUL  a631bBLF  aBlack, jhon d.  aFarm management /cJhon d. black, Marion clawson, Charles r. sayre, Walter w. wilcox.  aNew york :bThe macmillan,cc. 1949  aix, 1073p. :bill. ;c24 cm.  aIncludes bibliographical references and index.  aFarm management.  aAgriculture United States.  aarm management United States.